MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/06/01 through 01/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 643 2,251 2,894
Davis 2,090 437 2,527
Irvine 885 0 885
Los Angeles 156 559 715
Riverside 657 116 773
San Diego 503 230 733
San Francisco 346 0 346
Santa Barbara 424 308 732
Santa Cruz 353 252 605
LBL 0 105 105
LLL 0 75 75
Other - UC 53 175 228
CSL 0 152 152
CSU n/a 172 172
Other-Non-UC n/a 4,422 4,422
_______ ______ _____
6,110 9,254 15,364
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 273 909 6,383
2-4 a.m. 150 727 4,450
4-6 a.m. 171 708 5,041
6-8 a.m. 411 1,588 12,187
8-10 a.m. 1,868 6,608 57,387
10-12 a.m. 2,826 9,755 73,951
12-2 p.m. 2,975 9,850 74,217
2-4 p.m. 3,168 10,820 84,485
4-6 p.m. 2,153 7,824 60,417
6-8 p.m. 626 2,231 19,459
8-10 p.m. 381 1,104 12,545
10-12 p.m. 362 972 8,975
__________ __________ __________ _________________
Total: 15,364 53,096 419,497
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,676 7,081 8,757
Davis 9,044 1,646 10,690
Irvine 3,326 0 3,326
Los Angeles 404 1,492 1,896
Riverside 2,009 317 2,326
San Diego 1,591 425 2,016
San Francisco 575 0 575
Santa Barbara 1,472 686 2,158
Santa Cruz 2,112 658 2,770
LBL 0 121 121
LLL 0 240 240
Other - UC 43 603 646
CSL 0 225 225
CSU n/a 600 600
Other-Non-UC n/a 16,750 16,750
_______ ______ _____
22,252 30,844 53,096
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,622 65,406 82,028
Davis 62,733 8,816 71,549
Irvine 23,444 0 23,444
Los Angeles 3,918 13,062 16,980
Riverside 12,041 2,714 14,755
San Diego 7,396 2,892 10,288
San Francisco 4,168 0 4,168
Santa Barbara 11,765 6,974 18,739
Santa Cruz 11,656 4,879 16,535
LBL 0 1,072 1,072
LLL 0 5,863 5,863
Other - UC 782 4,953 5,735
CSL 0 1,463 1,463
CSU n/a 7,001 7,001
Other-Non-UC n/a 139,877 139,877
_______ ______ _____
154,525 264,972 419,497
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:10
Average session length (minutes:seconds) 14:17
Longest session recorded (minutes:seconds) 1062
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 72.6
Retrievals per search - standard deviation 1240.2
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 62.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 51,266 34.8%
DISPLAY (excluding automatic displays) 50,410 34.2%
ACFIND 7 0.0%
BROWSE 220 0.1%
SELECT 163 0.1%
HELP 958 0.7%
EXPLAIN 1,140 0.8%
SET/RESET 3,781 2.6%
SHOW 320 0.2%
AT 3,615 2.5%
ADD ON (AND, OR, AND NOT) 1,797 1.2%
LOGON or LOGOFF 24,657 16.7%
COMMENT 9 0.0%
SAVE 1,521 1.0%
USE 1,174 0.8%
OTHER 6,244 4.2%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 8,357 15.4% 1,971 23.6% 11 78.4 317.1
AUTHOR 2,037 3.8% 459 22.5% 14 96.2 357.0
CORPORATE AUTH 552 1.0% 188 34.1% 22 269.2 801.4
EXACT CA 14 0.0% 6 42.9% 17 667.0 1400.2
TITLE WORD 13,359 24.6% 4,079 30.5% 4 51.0 875.4
EXACT TITLE 7,359 13.6% 2,079 28.3% 2 21.8 152.0
TITLE -> TW 987 1.8% 248 25.1% 9 66.8 569.9
TITLE -> XT 1,312 2.4% 598 45.6% 1 11.1 99.3
SUBJECT 2,426 4.5% 792 32.6% 42 437.4 2399.6
EXACT SUBJECT 168 0.3% 24 14.3% 100 948.4 2420.7
PERIODICAL 10,504 19.4% 1,985 18.9% 4 90.0 1244.9
EXACT PE 3,291 6.1% 453 13.8% 3 32.1 541.4
RPE 3 0.0% 1 33.3% 3 2.5 2.1
XRP 2 0.0% 0 0.0% 30 30.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 159 0.3% 14 8.8% 25 127.1 437.3
DATE 959 1.8% 217 22.6% 3 40.6 172.8
FORM 724 1.3% 159 22.0% 11 1068.8 9042.2
NUMBER* 31 0.1% 18 58.1% 1 2.2 2.2
MUSIC* 52 0.1% 31 59.6% 7 381.0 883.3
SERIES 1,297 2.4% 481 37.1% 2 48.9 283.6
UNIFORM TITLE 13 0.0% 4 30.8% 60 61.0 48.1
Other indexes 586 1.1% 253 43.2% 1 58.2 586.5
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 3,489 6.9% 941 27.0% 4 49.5 288.7
Single 46,967 93.1% 12,135 25.8% 4 102.4 1512.5
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 14 7.2% 1 7.1% 6 17.4 24.0
CORPORATE AUTH 4 2.1% 1 25.0% 1 32.0 53.7
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 161 82.6% 37 23.0% 58 168.7 294.4
EXACT SUBJECT 12 6.2% 1 8.3% 50 92.7 160.4
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 4 2.1% 0 0.0% 3 38.5 73.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 205 100% 44 21.5% 47 152.0 304.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.9%
BRIEF 67.2%
LONG 11.0%
MARC 3.3%
FIELDS 3.3%
TAG 2.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 30.4%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 11.8%
4. DISPLAY command contains invalid word 4.8%
5. Search term missing from search command 2.8%
6. KW search in database w/o KW index 2.1%
7. Max. # of ports to a Z39 db are in use 2.0%
8. Valid command at an inappropriate time 1.9%
9. PS command - no previous screen 1.8%
10. DISPLAY command - no FIND results 1.5%
11. All others 16.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.2%
2. FIND 13.9%
3. INDEXES 6.1%
4. Unrecognized term 5.0%
5. COMMAND WORDS 4.8%
6. PASSWORDS 3.2%
7. LOCATE (PE DB) 3.2%
8. DISPLAY 1.9%
9. DATABASES 1.8%
10. CATALOG 1.8%
11. All others 32.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.0%
2. First word of command is invalid 13.6%
3. FIND command with invalid index name 12.1%
4. DISPLAY command - middle of >1 screen 3.1%
5. FIND command retrieves >1 book 3.0%
6. NS command - no next screen 2.8%
7. DISPLAY command - last of >1 screen 2.5%
8. DISPLAY command-complete in one screen 2.3%
9. DISPLAY command-first of >1 screen 2.3%
10. PE display complete in one screen 2.0%
11. All others 32.1%
Ten most frequent SHOW requests:
1. HISTORY 43.0%
2. TIME 17.4%
3. SEARCH 11.1%
4. GLOSSARY 7.7%
5. SETTINGS 5.7%
6. SYSTEM NEWS 2.0%
7. DATABASE NEWS 1.0%
8. MAIL STATUS 1.0%
9. UCB LIBRARY HOURS 0.7%
10. NEWS 0.7%
11. All others 9.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)